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3-Digit by 1-Digit Multiplication Worksheet

Mental maths lesson 22: Multiply 3-digit by 1-digit, hundreds first · Set 645 · 40 questions
TalentJR

How to do it in your head (Biggest part first): Split the 3-digit number into hundreds, tens and ones. Multiply the hundreds and keep that number in your head. Multiply the tens and add, then multiply the ones and add.

NameDateTime takenScore ___ / 40
  1. 1.421 × 9 =
  2. 2.624 × 4 =
  3. 3.963 × 5 =
  4. 4.825 × 8 =
  5. 5.368 × 3 =
  6. 6.586 × 8 =
  7. 7.396 × 4 =
  8. 8.441 × 8 =
  9. 9.491 × 9 =
  10. 10.961 × 4 =
  11. 11.282 × 4 =
  12. 12.722 × 3 =
  13. 13.959 × 5 =
  14. 14.954 × 8 =
  15. 15.751 × 8 =
  16. 16.151 × 7 =
  17. 17.851 × 3 =
  18. 18.124 × 3 =
  19. 19.953 × 3 =
  20. 20.124 × 4 =
  21. 21.812 × 4 =
  22. 22.671 × 4 =
  23. 23.441 × 7 =
  24. 24.344 × 7 =
  25. 25.513 × 6 =
  26. 26.809 × 4 =
  27. 27.744 × 8 =
  28. 28.854 × 5 =
  29. 29.231 × 5 =
  30. 30.127 × 9 =
  31. 31.931 × 4 =
  32. 32.251 × 4 =
  33. 33.669 × 6 =
  34. 34.952 × 8 =
  35. 35.533 × 7 =
  36. 36.891 × 3 =
  37. 37.816 × 8 =
  38. 38.649 × 4 =
  39. 39.961 × 7 =
  40. 40.756 × 4 =

Answer key

  1. 3789
  2. 2496
  3. 4815
  4. 6600
  5. 1104
  6. 4688
  7. 1584
  8. 3528
  9. 4419
  10. 3844
  11. 1128
  12. 2166
  13. 4795
  14. 7632
  15. 6008
  16. 1057
  17. 2553
  18. 372
  19. 2859
  20. 496
  21. 3248
  22. 2684
  23. 3087
  24. 2408
  25. 3078
  26. 3236
  27. 5952
  28. 4270
  29. 1155
  30. 1143
  31. 3724
  32. 1004
  33. 4014
  34. 7616
  35. 3731
  36. 2673
  37. 6528
  38. 2596
  39. 6727
  40. 3024

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